The closest thing I can think of is 170909a and maybe s13a. But they are both "bending the rules" in my opinion.
170909a has some user configurable top surface triangles.
s13a is a print on a magnetic tin foil, but is made transparent in our library. IMHO it should be changed.
It's possible to use 383, Chrome silver on a stickers like these. And there are lot of "mirror" stickers using colour 383.
Another example is s12a-s12d, but that is a print on a heat sensitive, colour changing material.
I like the surface of 170909 when it is coloured chrome silver, a mix of greys, met. silver and chrome, but the "pattern" is nothing like the pattern you need for 6991.
170909a has some user configurable top surface triangles.
s13a is a print on a magnetic tin foil, but is made transparent in our library. IMHO it should be changed.
It's possible to use 383, Chrome silver on a stickers like these. And there are lot of "mirror" stickers using colour 383.
Another example is s12a-s12d, but that is a print on a heat sensitive, colour changing material.
I like the surface of 170909 when it is coloured chrome silver, a mix of greys, met. silver and chrome, but the "pattern" is nothing like the pattern you need for 6991.